Question

How to delete all contacts number by name from android device.
if number is stored in SDCard and what ever location, how to delete using programmatly?

Answer 1

This should work:

    String your_contact_name = "John Doe";

    Cursor pCur = context.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME +" = ?", new String[]{your_contact_name}, null);
    while (pCur.moveToNext())
    {
        String lookupKey = pCur.getString(pCur.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
        Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_LOOKUP_URI, lookupKey);
        context.getContentResolver().delete(uri, null, null);
    }